1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mashcka [7]
3 years ago
7

PLZZZZZZZZ HELPPPPPP​

Chemistry
2 answers:
hjlf3 years ago
5 0

Answer:

482

Explanation:

Delicious77 [7]3 years ago
5 0
482 a. a a a a a a sahs annaba
You might be interested in
A substance that's attracted to water molecules is called
DedPeter [7]
Hydrophilic molecules
7 0
3 years ago
If a mixture looks smooth and the same throughout it is probably what
gulaghasi [49]
Answer:
             <span>If a mixture looks smooth and the same throughout it is probably <u>Homogeneous</u>.

Explanation:
                   Mixture is the combination of different compounds which are unreactive to each other.

Mixture are classified as ...

Solutions; in which the mixed compounds are thoroughly mixed and cannot be distinguished from each other and are said to be homogeneous. In solutions the size of solute is very small (i.e. Less than 1 nm).

Colloids; in which the solute is homogeneous visually but heterogeneous microscopically. The size of particles in this case is between 1 nm to 1 </span>μm.

Suspensions; in which the mixture is heterogeneous, the particle size is greater than 1 μm and settles down (precipitation) under the influence of gravity.
4 0
3 years ago
So, a gas, and an
valina [46]

Answer:

d) cut the large sized Cu solid into smaller sized pieces

Explanation:

The aim of the question is to select the right condition for that would increases the rate of the reaction.

a) use a large sized piece of the solid Cu

This option is wrong. Reducing the surface area decreases the reaction rate.

b) lower the initial temperature below 25 °C for the liquid reactant, HNO3

Hugher temperatures leads to faster reactions hence this option is wrong.

c) use a 0.5 M HNO3 instead of 2.0 M HNO3

Higher concentration leads to increased rate of reaction. Hence this option is wrong.

d) cut the large sized Cu solid into smaller sized pieces

This leads to an increased surface area of the reactants, which leads to an increased rate of the reaction. This is the correct option.

5 0
3 years ago
The particles that make up matter do not change during a ?
Bogdan [553]
Matter can only me transformed, but not created or destroyed.
8 0
3 years ago
Read 2 more answers
an_____is a trait that a organism inherits that makes it more suited to it's natural envormemt, helping it survive
Iteru [2.4K]

adaptation may be i guess

4 0
3 years ago
Other questions:
  • How much force is required to lift a rock a vertical distance of 8 m if 80 j of work were done
    5·2 answers
  • In writing an element's symbol the first letter is always ________________ and the second letter is ____________________. A) cap
    5·2 answers
  • At STP, which gas sample has a volume of 11.2 liters?
    7·1 answer
  • Convert the pressure 0.840 atm to mm Hg
    11·1 answer
  • Which isotope has 45 neutrons?<br> O A. 80,36KT<br> OB. 80,35Br<br> O C. 78,345e<br> O D. 34,17C1
    12·1 answer
  • An unidentified compound contains only phosphorous and fluorine, meaning we could write its formula as PxFy. Heating 0.2324 g of
    5·1 answer
  • The solid dissolves quickly is a chemical or physical reaction
    7·1 answer
  • Which of these affects the motion of an object
    11·2 answers
  • Which statement would indicate the presence of an acid?
    8·2 answers
  • Na2o3 is nitrogen trioxide why​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!